Abstract:
:URu2Si2 is one of the most enigmatic strongly correlated electron systems and offers a fertile testing ground for new concepts in condensed matter science. In spite of >30 years of intense research, no consensus on the order parameter of its low-temperature hidden-order phase exists. A strong magnetic field transforms the hidden order into magnetically ordered phases, whose order parameter has also been defying experimental observation. Here, thanks to neutron diffraction under pulsed magnetic fields up to 40 T, we identify the field-induced phases of URu2Si2 as a spin-density-wave state. The transition to the spin-density wave represents a unique touchstone for understanding the hidden-order phase. An intimate relationship between this magnetic structure, the magnetic fluctuations and the Fermi surface is emphasized, calling for dedicated band-structure calculations.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Knafo W,Duc F,Bourdarot F,Kuwahara K,Nojiri H,Aoki D,Billette J,Frings P,Tonon X,Lelièvre-Berna E,Flouquet J,Regnault LPdoi
10.1038/ncomms13075subject
Has Abstractpub_date
2016-10-20 00:00:00pages
13075issn
2041-1723pii
ncomms13075journal_volume
7pub_type
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